Product Details
Description
The ABB TB842 is a ModuleBus Optical Port for the S800 I/O system, enabling fiber optic connectivity between I/O clusters. It provides galvanic isolation, eliminates ground loops, and ensures strong EMI immunity, allowing reliable communication over long distances in distributed and electrically noisy environments.
Specifications
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Manufacturer: ABB
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Model Number: TB842
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Order Number: 3BSE022464R1
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Product Type: ModuleBus Optical Port
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Interface: Fiber Optic (ST connectors)
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Wavelength: 650 nm
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Fiber Type: Plastic Optical Fiber (POF) or Hard Clad Silica (HCS)
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Maximum Distance: Up to 15m (POF) or 200m (HCS)
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Power Supply: 24V DC (via ModuleBus)
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Mounting: 35mm DIN Rail
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Operating Temperature: 0 to +55°C
Features
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Optical Isolation: Provides 100% electrical separation between I/O clusters to protect sensitive control hardware from surges and noise.
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Extended Range: Overcomes the distance limitations of standard copper bus wiring, enabling remote placement of I/O modules.
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Redundancy Support: Compatible with redundant ModuleBus configurations to ensure high system availability and process uptime.
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Signal Integrity: Maintains high-speed deterministic data transmission across optical links without signal degradation.
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Snap-On Installation: Designed for effortless mounting on standard DIN rails, integrating seamlessly with other S800 communication modules.
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Diagnostics: Features integrated LED indicators for localized monitoring of power and bus communication status.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
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Emergency Stop pushbuttons use Normally Closed contacts for fail-safe safety, but mechanical wear can cause costly spurious trips. This technical guide examines E-Stop contact failure root causes, redundant hardware setups, PLC logic monitoring, and maintenance strategies to maximize plant availability.
Why 24V DC Is the Universal Standard for Industrial Automation Power Supplies
Industrial manufacturing requires continuous uptime to prevent equipment damage. Unlike AC power, 24V DC circuits seamlessly integrate with UPS units and battery banks. During main grid failures, a 24V DC backup system instantly maintains PLC memory, instrument loops, and critical safety valves without interruption.